Can one use the argument block to check structures at arbitrary depth?

For example, is the following legal:

arguments
analyzer (1,1) struct {mustContainFields(analyzer, ["P", "loops"])}
end
arguments (Input)
% Validate nested structures more specifically if needed,
% e.g., ensuring P.param and loops.conds exist and are cell arrays.
% This basic check ensures the top-level fields are present.
analyzer.P (1,1) struct {mustContainFields(analyzer.P, "param")}
analyzer.P.param (1,:) cell  % ERROR HERE
analyzer.loops (1,1) struct {mustContainFields(analyzer.loops, "conds")}
analyzer.loops.conds (1,:) cell
end

I assume it's just not legal? That is, can one only validate one level deep? (Fields of structures, but not fields of structures that are fields of structures)

Thanks

Steve

Answer 1

[Steve Van Hooser]

Answering my own:

Apparently you cannot check the fields of a structure in an argument block. You can only do this if the structure is passed to the function as an input of name/value pairs. So all lines after the first are invalid.